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"The human tripeptide GHK-copper in prevention of oxidative stress and degenerative conditions of aging: implications for cognitive health." Neurochemical Research , 33(4), 652-658

A rare side effect of NAD+ NMN+ IV therapy is muscle tension or ache (if the IV is taken too fast and the patient is dehydrated)

Safety and pharmacokinetics of withaferin-A in advanced stage high grade osteosarcoma: a phase I trial

Vitamin B12 deficiency can occur less frequently as a result of nutritional habits (strict vegans, breastfed infants born to vegan mothers with reduced dietary intake of animal products), drug interference (metformin, proton pump inhibitors, drug-affected purine, and pyrimidine synthesis), inherited disorders affecting intrinsic factor (IF) and other inherited disorders including methylmalonic acidemia and transcobalamin II deficiency nitrous oxide abuse, Diphyllobothrium latum infection, and pancreatic insufficiency.[] Metformin is considered a cornerstone in the treatment of diabetes and is the most frequently prescribed first-line therapy for individuals with type 2 diabetes